From 3280f80f7563d8bb026274f7521113bb26447bb9 Mon Sep 17 00:00:00 2001
From: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Date: Wed, 5 Aug 2020 09:30:31 +0200
Subject: [PATCH] Bug 26138: Make Koha::Plugins->call return consistent value

It must return an empty array in case the enable_plugins config flag is
disabled

Test plan:
Turn the config off in koha-conf
Start a search at the OPAC
Without this patch you got:
  Can't use string ("0") as a HASH ref while "strict refs" in use at /home/vagrant/kohaclone/opac/opac-search.pl line 661
With this patch applied you see the search result
---
 Koha/Plugins.pm                       | 4 ++--
 t/db_dependent/Koha/Plugins/Plugins.t | 8 ++++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/Koha/Plugins.pm b/Koha/Plugins.pm
index 41974e54ac..8d6957a298 100644
--- a/Koha/Plugins.pm
+++ b/Koha/Plugins.pm
@@ -63,9 +63,9 @@ Calls a plugin method for all enabled plugins
 sub call {
     my ($class, $method, @args) = @_;
 
+    my @responses;
     if (C4::Context->config('enable_plugins')) {
         my @plugins = $class->new({ enable_plugins => 1 })->GetPlugins({ method => $method });
-        my @responses;
         @plugins = grep { $_->can($method) } @plugins;
         foreach my $plugin (@plugins) {
             my $response = eval { $plugin->$method(@args) };
@@ -77,8 +77,8 @@ sub call {
             push @responses, $response;
         }
 
-        return @responses;
     }
+    return @responses;
 }
 
 =head2 GetPlugins
diff --git a/t/db_dependent/Koha/Plugins/Plugins.t b/t/db_dependent/Koha/Plugins/Plugins.t
index 92b5c5c6b7..f49bd252fc 100755
--- a/t/db_dependent/Koha/Plugins/Plugins.t
+++ b/t/db_dependent/Koha/Plugins/Plugins.t
@@ -47,12 +47,13 @@ BEGIN {
 my $schema = Koha::Database->new->schema;
 
 subtest 'call() tests' => sub {
-    plan tests => 2;
+    plan tests => 3;
 
     $schema->storage->txn_begin;
     # Temporarily remove any installed plugins data
     Koha::Plugins::Methods->delete;
 
+    t::lib::Mocks::mock_config('enable_plugins', 1);
     my $plugins = Koha::Plugins->new({ enable_plugins => 1 });
     my @plugins = $plugins->InstallPlugins;
     foreach my $plugin (@plugins) {
@@ -70,6 +71,10 @@ subtest 'call() tests' => sub {
     $expected = [ { error => 0 } ];
     is_deeply(\@responses, $expected, 'call() should return all responses from plugins');
 
+    t::lib::Mocks::mock_config('enable_plugins', 0);
+    @responses = Koha::Plugins->call('check_password', { password => '1234' });
+    is_deeply(\@responses, [], 'call() should return an empty array if plugins are disabled');
+
     $schema->storage->txn_rollback;
 };
 
@@ -352,5 +357,4 @@ subtest 'new() tests' => sub {
     is( ref($result), 'Koha::Plugins', 'calling new with enable_plugins makes it override the config' );
 };
 
-$schema->storage->txn_rollback;
 Koha::Plugins::Methods->delete;
-- 
2.20.1